Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0711b19517f334bbb44619c05779dad5d0a129ad00304cdf4162703f7b32985' 
  AND token = 'eNsalmgf7G4jphPT+PhBChTGGL8oll37oYvxumxAk8U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}